http://blogs.technet.com/b/omers/archive/2012/04/20/released-update-rollup-7-for-exchange-2007-service-pack-3.aspxOn 16th April, the Exchange CXP team released Update Rollup 7 for Exchange Server 2007 SP3 to the Download Center. This update contains a number of customer-reported and internally found issues since the release of SP3 RU6. See KB2655203: Descriptionen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)